'Stamp' in the Bible
Thus says the Lord God: Strike with your fist, stamp with your foot, and say, Alas! over all the vile abominations of the house of Israel for which [Israel] shall fall by sword, by famine, and by pestilence.
So that no one will have power to buy or sell unless he bears the stamp (mark, inscription), [that is] the name of the beast or the number of his name.
Then another angel, a third, followed them, saying with a mighty voice, Whoever pays homage to the beast and his statue and permits the [beast's] stamp (mark, inscription) to be put on his forehead or on his hand,
And the smoke of their torment ascends forever and ever; and they have no respite (no pause, no intermission, no rest, no peace) day or night -- "these who pay homage to the beast and to his image and whoever receives the stamp of his name upon him.
So the first [angel] went and emptied his bowl on the earth, and foul and painful ulcers (sores) came on the people who were marked with the stamp of the beast and who did homage to his image.
And the beast was seized and overpowered, and with him the false prophet who in his presence had worked wonders and performed miracles by which he led astray those who had accepted or permitted to be placed upon them the stamp (mark) of the beast and those who paid homage and gave divine honors to his statue. Both of them were hurled alive into the fiery lake that burns and blazes with brimstone.